Kukho iintlobo ezininzi zeegiya kwimveliso, kubandakanya igiya yelanga, igiya ethe tye, igiya ephindwe kabini, igiya yangaphakathi, igiya yangaphandle, kunye negiya ye-bevel.
Ukuveliswa kweegiya ze-powder metallurgy kufuneka kuqala kuqinisekise izixhobo.Mininzi imigangatho ephakathi yemathiriyeli yesinyithi somgubo.Njengoko iJapan, iUnited States kunye neJamani zikhokela ihlabathi kuphando lwesinyithi somgubo, okwangoku kukho uluhlu olubanzi lwemathiriyeli ye-JIS, iMPIF, kunye nemigangatho yemathiriyeli ye-DIN.
Iigiya zihlala zineemfuno ezithile zamandla, ngoko ke ukusebenza kwezinto ezikhethiweyo kufuneka kuhlangabezane neemfuno zemveliso.Okwangoku, izixhobo ezisetyenziswa ngokubanzi kwiigiya zizinto ze-Fe-Cu-C-Ci (ezihambelana ne-JIS SMF5030, SMF5040, kunye ne-MPIF FN-0205, umgangatho we-FN-0205-80HT) Izinto ze-Fe-Cu-C nazo ziyafumaneka.
Ubuninzi beegiya zesinyithi somgubo, ngenxa yokuba iigiya zisetyenziselwa ukuhanjiswa, zineemfuno eziphezulu zokomelela kweegiya, ngoko ke ukuxinana kweemveliso kuya kuba phezulu, kwaye ukuxhathisa izinyo kuya kuphuculwa kwaye amandla aya kuba phezulu.
Ukuqina kwezixhobo zentsimbi yomgubo kuhambelana ngokusondeleyo nezinto eziphathekayo, ibakala lokuxinana kunye nokulungiswa kwangemva kwemveliso.Ngoko xa uthenga iigiya, uluhlu lobunzima kufuneka luboniswe kumzobo.
Emva kokuba i-gear sintered, ukwenzela ukuba kuphuculwe amandla kunye nokuxhatshazwa kwempahla, iinkqubo emva kokulungiswa zihlala zongezwa ukuphucula ukusebenza.Ngokuqhelekileyo kukho iinkqubo ezimbini zonyango:
1. Ukunyanga umphunga wamanzi angaphezulu.Umphunga wamanzi udibana ne-Fe kumphezulu wegiya ukwenza into eshinyeneyo i-Fe₃O₄.I-Fe₃O₄ inobunzima obuphezulu, obunokunyusa ukuxhathisa ukunxiba kunye nokuqina komphezulu wegiya.
2. Unyango lwe-Carburizing
Okufanayo nonyango lwe-carburizing yeegiya zoomatshini eziqhelekileyo, i-carbonitriding kunye nokucima zisetyenziswa kwiimeko ezininzi ukuphucula ubulukhuni bomphezulu wegiya.